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简单介绍了测量船船岸通信网络组成,重点介绍了NTP(网络时间协议)和PTP(精密时间协议)这2种网络时间同步协议。针对改建后的船岸网络时延测量误差进行分析和研究,提出基于TWSTFT(卫星双向时间频率传输)技术模型的网络时延测量方法,测量结果误差小于3ms,满足测控任务实时性要求,为提高测控网的测控精度提供有益参考。
This paper briefly introduces the composition of ship-to-shore communication network of measuring ship, and mainly introduces two network time synchronization protocols: NTP (Network Time Protocol) and PTP (Precision Time Protocol). Aiming at the analysis and research of the time-delay measurement error of the reconstructed ship-shore network, a method of network delay measurement based on the technology of TWSTFT (satellite bi-directional time-frequency transmission) is proposed. The measurement error is less than 3ms to meet the real- Measurement and control network monitoring and control accuracy provides a useful reference.